Padlock.



N0. 710,722. Patented D01. 7, |902.

H. A. SMITH.

PADLOCK.-

(Application med ct. 5, 1901.)

{No Model.)

wimess T 20 8 jg imwuoe M 27 /W//W/V/ M f 5 (la /Q (Q NTTED STATESPATENT OEEICE.

HENRY A. SMITH, OF LOS ANGELES, CALIFORNIA.

PADLOCK.

SPECIFICATION forming part of Letters Patent N o. 710,722, datedOctober` 7, 1902.

Application filed October 5,1901. Serial No. 77,711, (No model.)

This invention is applicable to padlocks adapted for any of the uses towhich such locks may be applied. It is specially designed, however, forcar and switch locks.

A feature in padlocks ordinarily employed for locking railway cars andswitches is that the same may be unlocked without a key byconcussion-that is to say, trainmen and others acquainted with the factare accustomed to readily open such locks by applying pressure to thehasp and at the same time striking the case of the lock in such a waythat the inertia of the members of the lock will cause the catch towithdraw from the hasp, thus allowing the hasp to open..

One object of my invention is to construct a lock of very simplecharacter which cannot be opened by any such means.

Another object of the invention is to construct a padlock of few partsof simple character which affords an opportunity 'for considerablevariation in the keys for different locks.

The accompanying.drawings illustrate myv II II, Fig. I, looking in thedirection of the` arrows. Fig. III is a detail ele Yation of thestationary and sliding wards. Fragments of the frame of the lock areshown in section on line III III, Fig. I. The keypost is also shown.Fig. IV is a plan section on line IV IV, Fig. III. Fig. V is a detailofthe side of the wards reverse to that shown in Fig. III. Fig. VI isaview of one side of the key detached. Fig. VII is a fragmental Viewillustrating the other side of the key.

l designates the frame ofthe lock; 2, a hasp, and 3 a catch,respectively furnished with engaging faces 4 5, which are oblique to thepath of the catch. The bottom of the recess forms ashoulder andisinclined downwardly and outwardly, so that its remote or outer portionis deeper than its near or inner portion, and the 'end of the catch isinclined inwardly and upwardly ou its under surface or is lformedsubstantially hook-shaped by extending its tip below the bottom of themain portion a distance equal to the depth ot the inclination of thebottom of the recess to correspond and engage with the shoulder orinclined bottom of the recess. The catch moves in a straight line atsubstantially a right angle to the free end of the hasp, and in order topermit its tip or hook engaging with or being disengaged from theshoulder or bottom of the recess of the hasp the end of the hasp must beforced inward a distance equal to the depth of the incline of the bottomof the recess, for the reason that the tip ot the catch must move backand forth in astraight line. If desired, the inward movement of the haspmay be limited, as by means of stops formed on the hasp above therecess, which will engage with the top of the frame and prevent thefurther inward movement of the hasp.

6 designates means to yieldingly hold the catch 3 in locking position.The catch 3 slides in the direction indicated by the double headed arrowand is held in place and guided by a rectilinear way which is formed bythe frame l of the lock and studs 7 8, adapted for that purpose.

9 designates means for yieldingly holding Athe hasp 2 open in theposition indicated by dotted lines in Fig. I. The hasp is mounted in theframe by means of a pivot 10 in the ordinary way, and the spring 6yieldingly holds the catch in position, with its engaging face 5 in thepath of the engaging face 4L of the hasp.

Il designates a stationary ward furnished with a passage 12 for aportion 13 of a key 14, which is constructed to engage the arm I5 of thecatch 3 to withdraw the catch from the hasp. The arm extends downwardlyfrom the under side of the catch between the pins 7 and 8, which projectout from one side of the casing and support the catch and act as stopsto limit its endwise movement. The tip of the arm is rounded in frontfor engageyment by the key in throwing it back. The

or connected with the frame in any way.

rear face of the arm is recessed longitudinally for the reception of thefree end of the spring 6. The arm is of such width that it extendsbeyond one side of the catch far enough to engage with one side Z) ofthe casing and hold the catch substantially midway between the sides ofthe casing, a lug 22 on the other side of the catch engaging with theother side a of the casing.

16 designates a sliding ward, and 17 means for yieldingly holding thesliding ward in position to guard the key-passage 12 of the stationaryward 11 and furnished with a key-receiving portion 18 to be engaged by aportion 19 of the key 14, which is constructed to enter the case throughthe usual keyhole (not shown) and to turn on the key-post 2O andarranged to slide the sliding ward when the key is rotated and removesaid sliding ward from the path of the catch-operating portion 13 of thekey. The beveled portion 13 of the sliding ward extends out of line ofthe passage 12 of the stationary ward, and the key is furnished with aforward projection 19 to engage the beveled portion 18 before thecatch-engaging portion 13 of the key has come into contact with thesliding ward 11.

22 designates a lug on one side of the catch to move inside the frame 1of the lock to engage the side member a, of said frame to thereby holdthe catch in position.

The hasp and catch are rounded at their contacting ends to allow thehasp to pass the catch readily in the usual way.

23 designates the eye or recess in the end of the hasp to receive thecatch.

The stationary ward 11 may be formed on In the drawings it is shownconnected with the frame by means of a post 24 and by insertion intogrooves 25 (shown only in dotted lines) in the sides a Z2 of the frame.

When the hasp is inserted into the frame and the-catch is inserted intothe recess 23, the pressure of the spring 9 on the end 26 of the haspdraws the hasp outward in the way usual with spring-padlocks, and byreason of the oblique character of the engaging faces 4 and 5 of thehasp and catch the catch is retained in its locking position. The spring6 forcibly holds the catch in such position. If an attempt is made toopen the lock by concussion, the action'is as follows: Any pressureapplied to move the hasp out will force the oblique faces together, soas to prevent the catch from withdrawing from the hasp. To unlock thelock with a key, the hasp is pressed in while the key is rotating. Theforward projection 19 of the key iirst acts upon the beveled portion 1Sof the sliding ward, and thereby forces the slidingr ward back out ofthe path of the catch-operating portion 13 of the key, allowing saidcatch-operating portion 13 to pass through the passage 12 of the wardtherefor and to act upon the arm 15 of the catch to slide the catch outof the way. When the catch has been thrown suiiiciently,

the hasp is allowed to withdraw, whereupon the key passes the arm 15 andallows the catch to return to its locking position to receive and holdthe hasp when the same is again inserted. In Fig.A I' the curved dottedarrow indicates the movement of the catchoperating portion 13 of thekey.

27 designates a guard-ring, any number of which may be applied in theordinary way to vary the form of the key. Additional variations areprovided for by the stationary ward 11, the key-passage 12 through whichmay be varied in size and position, and the catch-operating portion 13of the key being necessarily of such a length that it will not pass thesliding Ward 11 unless the same is forced back.

Many variations of the invention will readily suggest themselves to anyone versed in this art, and no attempt to illustrate the various modesof carrying out my invention is made in this application, and I do notlimit myself to any specific form.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. In a lock, a casing, a curved hasp pivotally secured at one end tothe casing and having a forwardly and downwardly inclined recess at theother end and a straight catch arranged to move in a right linesubstantially radially relatively to the pivot-point of the hasp and atright angles to the free end of the hasp, the outer end of the catchbeing substantially hook-shaped and adapted to be moved into and out ofengagement with the recessed portion of the hasp.

2. In a lock, a casing, a hasp pivotally secured thereto at one end andhaving its end provided with an inclined shoulder and with a stop, theouter portion of said incline being deeper than the inner portion, and astraight catch movable in a straight line into and out of engagementwith'said shoulder, the tip of the catch being inclined on its undersurface and extending below the bottom of the main portion to form ahook, and the stop on the hasp being located a sufficient distance abovethe shoulder to permit of the free end ofthe hasp being forced into thecasing beyond its normal position, equal to the length of said eX-tension of the tip of the catch.v

3. In a lock, a casing provided with three pins, a hasp pivotallysecured tothe casing, the free end of which is shouldered and the otherend extends beyond the pivot, a longitudinally-movable catch on two ofthe pins, one side of which is provided with a lug for engaging with oneside of the casing and the under side is provided with an arm betweenthe lugs, one side of said arm engaging with the other side of thecasing, whereby the catch is held substantially midway between the sidesof the casing, and two springs on the third pin, one of which engageswith the extension of the hasp and the other one engages with the arm ofthe catch adjacent to one side of the casing.

4. A lock furnished with a catch, means for ICO IIO

IZO

yieldingly holding the catch in locking,Y position, a stationary ward, asliding Ward, means for yieldingly holding the sliding Ward in positionto guard the key-passage of the stationary Ward and furnished with akey-receiving face, and a key to operate said catch constructed to slidethe slidingr ward and to then pass the stationary ward to move thecatoh.

5. In a lock, a stationary Ward and a sliding ward constructed to extendacross the path of the key, a catch, and a key constructed to move thesliding Ward, pass the stationary ward, and move the catch.

6. A lock Comprising acatch; a stationary ward having a passage for aportion of a key; a sliding,r ward constructed to close said pas- HENRYA. SMITH.

Witnesses:

JAMES R. ToWNsEND, JULIA ToWNsEND.

